How to Use MLX90614 with Arduino: A Comprehensive Guide

Introduction

The MLX90614 is a non-contact infrared thermometer that measures temperature from a distance. It is widely used in industries such as food processing, HVAC, and automotive. In this guide, we will show you how to use the MLX90614 with an Arduino board.

What You Need

Before we dive into the code, here’s a list of things you will need:

1. Arduino board (Uno, Nano, etc.)
2. MLX90614 sensor module
3. Breadboard and jumper wires
4. USB cable
5. Arduino IDE (Integrated Development Environment)

Setting Up the Hardware

The first step is to connect the MLX90614 sensor module to the Arduino board using the breadboard and jumper wires. Follow these steps:

1. Connect the VIN pin of the sensor module to the 5V pin of the Arduino board.
2. Connect the GND pin of the sensor module to the GND pin of the Arduino board.
3. Connect the SDA pin of the sensor module to the A4 pin of the Arduino board.
4. Connect the SCL pin of the sensor module to the A5 pin of the Arduino board.

Writing the Code

Now that we have the hardware set up, it’s time to write the code. Here is a sample code:

    
#include <Wire.h>
#include <Adafruit_MLX90614.h>
Adafruit_MLX90614 mlx = Adafruit_MLX90614();
void setup() {
  Serial.begin(9600);
  mlx.begin();
}
void loop() {
  Serial.print("Ambient temperature: ");
  Serial.print(mlx.readAmbientTempC());
  Serial.print("CtObject temperature: ");
  Serial.print(mlx.readObjectTempC());
  Serial.println("C");
  delay(1000);
}
    
  

Uploading the Code

Connect your Arduino board to your computer using the USB cable and open the Arduino IDE. Follow these steps:

1. Select your board under Tools > Board.
2. Select the port under Tools > Port.
3. Copy and paste the code into the IDE.
4. Click the Upload button.

Conclusion

Now you know how to use the MLX90614 with an Arduino board. This guide should give you a good starting point for your next project. Remember to adjust the code according to your specific needs. Good luck!